26 research outputs found
Deviations in Tribimaximal Mixing From Sterile Neutrino Sector
We explore the possibility of generating a non-zero element of the
neutrino mixing matrix from tribimaximal neutrino mixing by adding a light
sterile neutrino to the active neutrinos. Small active-sterile mixing can
provide the necessary deviation from tribimaximal mixing to generate a non-zero
and atmospheric mixing different from maximal.
Assuming no CP-violation, we study the phenomenological impact of sterile
neutrinos in the context of current neutrino oscillation data. The tribimaximal
pattern is broken in such a manner that the second column of tribimaximal
mixing remains intact in the neutrino mixing matrix.Comment: 13 pages, 5 figures, 2 table
A new texture of neutrino mass matrix with three constraints
We present a new texture of neutrino mass matrix having three complex
relations among its elements and study in detail the phenomenological
implications. A characteristic feature of the resulting neutrino mass matrix is
that the atmospheric neutrino mixing angle is predicted to lie in a very narrow
region near . We illustrate how such a form of the neutrino mass
matrix can be realized using the non-Abelian flavor symmetry in the
framework of type-I+II seesaw mechanism.Comment: 10 pages, 2 figures, 2 tables, matches published versio